named-mutex

named-mutex-js

cross process named mutex

Install

>npm install --save named-mutex

Usage

child.js

const NamedMutex = require('named-mutex')
 
const mutex = new NamedMutex('testMutex')
console.log(mutex.tryLock())
 
setTimeout(()=>{
  console.log('process leaving')
}, 3000)

main.js

const NamedMutex = require('../src/named-mutex')
const cp = require('child_process')
 
const mutex = new NamedMutex('testMutex')
console.log(mutex.tryLock()) // output: true
const {stdout} = cp.spawnSync('node', ['child.js'])
console.log(stdout.toString().trim()) // output: false
mutex.unLock() // process still release the mutex on leave, even if this line is absent